build: Create upgrade-python-requirements.yml

[feanil]

Add regular requirements update PRs.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.78%. Comparing base (c263dae) to head (1b95c56).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #151 +/- ## ======================================= Coverage 99.78% 99.78% ======================================= Files 11 11 Lines 461 461 Branches 33 33 ======================================= Hits 460 460 Partials 1 1 ```

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